51400454 has 8 divisors (see below), whose sum is σ = 88115088. Its totient is φ = 22028760.

The previous prime is 51400451. The next prime is 51400463. The reversal of 51400454 is 45400415.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51400454² = 5284013342812232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51400451) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1835717 + ... + 1835744.

It is an arithmetic number, because the mean of its divisors is an integer number (11014386).

Almost surely, 2^51400454 is an apocalyptic number.

51400454 is a deficient number, since it is larger than the sum of its proper divisors (36714634).

51400454 is a wasteful number, since it uses less digits than its factorization.

51400454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3671470.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 51400454 is about 7169.4109939381. The cubic root of 51400454 is about 371.8110720230.

Adding to 51400454 its reverse (45400415), we get a palindrome (96800869).

The spelling of 51400454 in words is "fifty-one million, four hundred thousand, four hundred fifty-four".